Purpose: The treatment algorithm for supracondylar humerus fractures in children under age seven is well-established. However, the best treatment option for these fractures in older children (8–14 year olds) is debated. The purpose of this study was to assess the efficacy of closed versus open fixation methods of this fracture type in older children. We hypothesize that closed reduction and percutaneous pinning (CRPP) is as effective as open reduction and internal fixation (ORIF).

Method: A retrospective chart review was completed of all patients 8–14 years old treated for supracondylar humerus fractures at one centre from 2000–2007. IRB approval was obtained for this study. Demographics, treatment methods, pre- and post-operative complications, functional and radiographic outcomes were reviewed. Values are reported as mean ± standard deviation.

Results: Seventy-eight eligible patients were identified: 60 (76.9%) were treated with CRPP, and 18 (23.1%) were treated with ORIF. Demographics and fracture characteristics were similar between the CRPP and ORIF groups, although patients treated with ORIF were older (p< 0.001) and weighed more (p< 0.001). The ORIF group had higher post-operative complication rates (p=0.016). Five patients treated with CRPP required additional surgery (3 underwent ORIF; 2 underwent repeat CRPP) compared with none in the ORIF group. Children treated with ORIF had greater limitations on active flexion (99.7o ± 18.2 ORIF, 140.5o ± 23.5 CRPP, p< 0.001) and active extension (34.3o ± 19.0 ORIF, 11.9o ± 21.2 CRPP, p< 0.001) at first follow-up. Limitations in active flexion persisted in the ORIF group, but not in the CRPP group, at time of last follow-up (120o ± 14.8 versus 150.4o ± 17.8, p< 0.001). There were no group differences in active extension at last follow-up (p=0.093). On radiographs, significant differences between the groups existed for Bauman’s angles (15.5o ± 5.5 ORIF, 19.3o ± 4.9 CRPP, p=0.013) and carrying angle (12.4o ± 5.7 ORIF, 16.6o ± 5.4 CRPP, p=0.008). Radiographic union was achieved in all cases.

Conclusion: Open and closed surgical fixation are both acceptable treatment options for supracondylar humerus fracture in older children. While ORIF appears to result in reduced range of motion, no further operations were required for fracture alignment in this group.